The Texas Commission on Environmental Quality (TCEQ) has issued an Ozone Action Day for Thursday, April 10, 2025, due to expected high levels of ground-level ozone pollution. This marks the first such alert for the region this year, underscoring the importance of taking measures to protect public health and improve air quality.
Air quality conditions are predicted to be unhealthy for sensitive groups, including young children, the elderly and individuals with respiratory conditions like asthma, bronchitis or emphysema. Health officials recommend that vulnerable residents limit prolonged outdoor activities and consider staying indoors during peak pollution hours, typically from late morning to early evening, when ozone levels are highest.
In response to the alert, the City of San Antonio is urging both residents and businesses to take simple, proactive steps to help reduce ozone pollution. Suggested actions include refueling vehicles in the evening after 6 p.m., avoiding the use of drive-thru services and turning off engines instead of letting them idle. Residents are also advised to raise their thermostats by 2 to 3 degrees during the late afternoon hours to ease energy demand. Additionally, opting for public transit, carpooling when possible and combining errands to limit car trips can all play a role in lowering ozone levels and improving air quality.
Ground-level ozone forms when pollutants from vehicles and industrial sources react with sunlight, especially on warm, sunny days. This reaction is more pronounced during periods of high temperatures and low wind, leading to elevated ozone levels in the atmosphere. Reducing emissions and energy use during these periods can help mitigate the harmful effects of this air pollutant.
Residents are encouraged to stay informed about air quality conditions and take appropriate precautions. For the latest air quality updates and more tips on how to reduce pollution, residents can visit the TCEQ or the San Antonio Metropolitan Health District websites.
Disclaimer: This article is for informational purposes only and does not replace official guidance from environmental or health authorities. For accurate and up-to-date information, please refer to official public health and environmental resources.
